Folding chair



(No Model.)

J. BRIGGS. FOLDING CHAIR.

No. 328,181. Patented Oct-13, 1885.

Mmmes, 5 Eve-21160)";

UNITED STATES PATENT OFFICE.

JOSHUA BRIGGS, OF PETERBOROUGH, NEW HAMPSHIRE.

FOLDING CHAIR.

EPBCIFICATION forming part of Letters Patent No. 328,181, dated October13, 1885. Application filed October 20. 1884. S rial No. 145,389. (Nomodel.)

To all whom it may concern:

Be it known that I, JOSHUA BRIGGS, of Peterborough, county ofHillsborough, State of New Hampshire, have invented an Improvement inFolding Chairs, of which the following description, in connection withthe accompanying drawings, is aspecification, like letters on thedrawings representing like parts.

This invention has for its object the production ofa folding andadjustable chair, more especially adapted for music-stools.

In my improved chair the side pieces have a metallic guide-rail withwhich co-operatesa finger-piece attached to the rear side of the seat,the finger being so shaped as to slide longitudinally upon the'rail asthe seat is raised or lowered, preventing the disconnection of the seatfrom the rail,and to confine the rear side of the seat in properposition for use. The rail has holes or notches to receive a pin orprong attached to the seat. The under side of the seat, near its frontside,has hinged to it a bracket or arm provided with pins to enter holesin the chair-frame, or vice versa.

Figure 1 is a side elevation of a chair embodying my invention; Fig. 2,a front elevation thereof, and Fig. 3 a partial section,looking upwardfrom the line 00 m, Fig. 1.

The side frames, A A, of the chair,shaped, as shown, to constitute thelegs and to support between them the pivoted back piece, B, are joinedtogether by rungs A, and are provided along one edge with a series ofholes, a c c, to receive the pins or projections d at the ends of thebrackets D, connected by hinges d with the under side of the seat S, thesaid brackets being connected by a rung, d, and a rod, 01. The frontedges of the side frames have metallic guide-rails 6 (shown as made Tshape in cross-section) connected with them by suitable screws. (Shownin dotted lines.)

The top of the guide-rail is shown as provided with a series of holes, 22.

The rear side of the seat has attached to it, by screws f f, thefingerpiece E and prong 3. The hooked ends of the finger-piece embracethe rail, as shown best in Fig. 3, and slide up and down on the rail asthe seat S is to be raised or lowered, the pins (1 of the bracketsDbeing then removed from the holes a, and the upper end of the seatturned down sufficiently to remove the prongs 3 from the holes 2in therail. The rear edge of the seat being at the desired level, or with eachprong 3 opposite that one of the holes 2 whereit is desired to fix therear edge of the seat, the front part of the seat is turned so as toplace the seat in horizontal position, such movement of the seat placingeach prong 3 in one of the holes 2, and thereafter the lower ends of thebrackets D will be thrown toward the side frames, A, and the pins atwill enter the holes 0.

The lower ends of the brackets cl" are normally pressed toward the sideframes by the spring G, attached by screw 4 to the under side of theseat, the free end of the spring resting against the rod (1'.

The back B is provided at each end with a yoke-piece, h, recessed forthe reception of the ends of the back, and provided with projections orstop-pins h, which enter holes or recesses h of greater diameter in theside pieces, said yoke-pieces it being secured to the back by screws b.

The back is pivoted at each end to the side frames by screws m.

The back can tip more or less according to the difference between thediameter of the pins h and the holes h as shown in dotted line, Fig. 1,the two opposite upper pins bearing against one side of theircorresponding holes, while the other or lower pins bear against theopposite side of their corresponding holes, and vice versa.

The seat may be made to occupy any one of three positions. In thedrawings it is shown in its highest position; but if lowered so that theprongs 3 enter the first or second hole 2 below, and the pins (1 of thebrackets be correspondingly lowered, the seat may be placed at lowerpoints.

To fold the chair remove the pins (1 from the holes a c and push downthe outer edge of the seat, placing its under side close to the sideframes. V

The fingers of the finger-piece E may he slid to the top of theguide-roll e, and disconnected from the flanges thereof, so that theseat, with the attached brackets D, may be held disconnected from theside rails of the chair. The said side rails are connected together onlyby the rung A and back piece, B, and by removing the screws a and m thesaid side rails may be disconnected from one another, and, with the seatportion and bracket D, laid fiat and packed in a small space forshipment.

The rung A is provided at its end witlia nut, a, which may either be ofmetal or of Wood, having its grain at right angles to the length of thesaid rung to afford a suitable hold for screws a, which may thus beremoved and inserted several times Without becoming 1oosened.

I claim- 1. In a chair, the side pieces provided with the T-shapedguide-rail, combined with a seat supported by brackets, and providedwith a finger-piece to engage the guide-rail, substan tially asdescribed.

2. The side pieces provided with the T- shaped guide-rail having holes2, and the seat and its attached finger-pieces and prongs 3, the formerto engage the rail and thelatter to enter the holes 2, combined withbrackets to support the front part of the seat in adjusted position,substantially as described.

3. The side rails having holes h, and the pivoted back combined with theyoke-piece h, secured to said back, and with pins h, cooperating withthe holes If, all substantially as described.

4. The side rails, back, and rung A, provided with a nut, a", combinedWith the screws m a, and the detachable seat, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSHUA BRIGGS.

W'itnesses:

J 0s. 1?. LIVERMORE, B. J. NoYEs.

